Yep, Sondry is right, some thread does get old. I am getting a little concerned about some serger thread I have had for a while now. It is Egyptian thread so I hate to toss it but I would rather toss then sew something and have it fall apart. Anyone know how to check the thread other then by the time it is so old it just breaks? That would probably be good to know! I read somewhere to keep your thread in the freezer (moisture helps it) but gee I would have no room for anything else if I did that, and I don't even know if that is true.